Gtjstav metzgee



Umra STATES GUSTAV METZGER, OF NEWARK, NEW JERSEY, ASSIGNOR TO JOHN B.

STOBAEUS, OF

SAME PLACE.

FLUID-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 336L714, dated January19, 1886.

Application filed November 7, 1885.

T 0 all whom it may concern.-

Be it known that I, GUSTAV METZGER, a citizen of the United States, anda resident of Newark, county of Essex, State of New J ersey, haveinvented new and useful Improvements in Fluid-Pressure Regulators, ofwhich the following is a specification.

My invention relates to improvements in apparatus for reducing pressure,generally called reducingvalves, and in particular to the class ofdiaphragm-valves.

The novel features of my improvements are fully pointed out in thefollowing specification, and illustrated in the annexed drawings, inwhich Figure l is a vertical section of the apparatus. Fig. 2 is asection on w :0 of Fig. 1. Fig. 3 is a side view of the valve-plugdetached. Figs. 4 and 5show modifications of the valve-plug andvalve-lever. Fig. 6 shows. the apparatus attached to a carbonic-acidflask.

A represents the casing of the valve; B, a diaphragm, preferably made ofthin sheet metal and secured by bolts between the flanges of the casingA and of a shell, G.

O is the low-pressure chamber, formed by the casing A and the diaphragmB.

E is a hollow cross, screwed into or otherwise fastened to the casing A,or forming one piece with the same. One of its hollow arms, a, isthreaded for the reception of a plug, D, which by its threaded socket eis connected with the supply-pipe, (marked p in Fig. 6.) The oppositearm, 1), contains the dischargechannel f, and has a threaded channel forattaching a pipe, 9, leading to the place of use. The hollow arm 0 leadsto the low-pressure chamber 0, and the hollow arm d may be plugged up,ora pressure-gage, Q, attached to it. The valve-plug D has a narrowchannel, leading to the valve-nozzle 7c, the end face of which forms thevalve-seat.

As shown in Figs. 1 and 3, the valve-seat faces upward at right anglesto the diaphragm; but it may be made to. face in opposite direction, asin Fig. 5, or at right angles to this direction, as in Fig. 4.

l is a lever pivoted to the valve-plug D at m, and holding thevalve-disk 12, which con- Serial No. 182,098. (No model.)

sists of brass or similar material inserted into a recess in the leverZ, and coated on the outside by a thin layer of soft metal, preferablytin-solder, whereby the closing of the valve is rendered reliable andeffective.

I am aware that soft-metal valve-disks are well known and have been inuse prior to my invention for insuring a perfect bearing between thevalve and its seat. Small valvenozzles such as used by me are,however,very apt to become embedded in the soft-metal seats, whereby thedegree of deflection of the discharged jet is changed, and consequentlyalso the pressure upon the lever and the adjustment of the instrument.By using a hardmetal seat coated by a very thin layer of soft metalembedding of the nozzle is prevented, while the soft-metal coatinginsures a perfect bearing.

n is a screw-socket pivoted to the outer end of the lever Z; 0, a rod,one end of which is screwed into the socket n,while the other endv isconnected to the diaphragm B, as shown in Fig. 1, both connections beingadjustable.

As shown in Figs. 1 and 3, the lever Zis single-armed; but in themodification shown in Fig. 5 it is a straight double-armed lever, and inFig. 4 a bell-crank lever.

The shell G has a hollow internally-threaded shank, it, within which oneend of a spiral spring, u, is placed, the other end of which abutsagainst the diaphragm B. A screwplug, S, is screwed into the shank t,and has a lug which projects into the spiral spring u.

By the screw-plug S the pressure of the spring upon the diaphragm isregulated. An airhole may be provided in the shell G.

Fig. 6 shows the apparatus attached to a carbonic-acid flask or otherhigh-pressure vessel, P, by means of a pipe, p.

Q is a pressure-gage; q, the place of use, and being stop-cock, y.

In place of the spring a, a weighted lever may be used for regulatingthe pressure upon the diaphragm.

Iam aware that diaphragm-valves have long been known, and have been usedfor regulating pressure, such valves being, for instance, described inBritish Letters Patent of 1837,

a pipe leading to provided with a No. 7,447, of 1889, No. 7,939, and innumerous other foreign and American patents.

Vhat I do claim as my invention isl. The combination, with thelow-pressure chamber 0, formed by the casing A and the diaphragm B, ofthe cross E, the valve-plug D, screwed into the cross E andcontainingthe inlet-channel g and valve nozzle k, the lever Z, pivotedto the plug D, and containing the metallic valve-disk v, the rod0,:1djustably connected to the lever Z and to the diaphragm B, anoutlet, f, and means, substantially as described, for regulating thepressure upon the diaphragm, substantially as and for the purpose setforth.

GUSTAV METZGER.

Witnesses:

J. B. Sronnnus, Gims. BANDER.

